diff --git a/packages/components/cascader-panel/src/index.vue b/packages/components/cascader-panel/src/index.vue
index 79630480e6..faf7d787f3 100644
--- a/packages/components/cascader-panel/src/index.vue
+++ b/packages/components/cascader-panel/src/index.vue
@@ -129,6 +129,7 @@ export default defineComponent({
         dataList && store.value.appendNodes(dataList, parent)
         node.loading = false
         node.loaded = true
+        node.childrenData = node.childrenData || []
         cb && cb(dataList)
       }